Venezuelan President Maduro has accused Colombia of plotting his overthrow, while Bogota said Venezuela harbors and backs rogue rebel fighters. The US offered Colombia its “full support” against any attempted aggression.

Venezuelan President Nicolas Maduro deployed 150,000 troops to his country’s border with Colombia as tensions continue to rise between the two countries.

“The moment has come to defend our sovereignty and national peace by deploying our defense resources in full force,” Maduro said on Twitter.

Aside from personnel, Maduro’s government deployed tanks and missile carriers to its western Tachira state, an area that has become the departure point for millions of Venezuelans migrating to the south. There are currently more than 1 million Venezuelans living in Colombia.